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한현근 ( Hyun Guen Han ),이종국 ( Jong Kook Lee ) 조선대학교 공학기술연구원 2008 공학기술논문지 Vol.1 No.1
Porcelain ceramics by mixing recycled waste ceramic raw materials and normal ceramic raw materials were prepared to reduce the manufacturing cost. The waste ceramic raw materials were recycled by crushing and ball milling waste porcelain bodies. The mean particle size of recycled ceramic raw material after milling was 22 ~ 40 ㎛ with irregular shape and narrow particle size distribution. Shrinkage and sintered density of compacts obtained from recycled ceramic batch composition increased with increasing sintering temperatures. However, the sintered density was independent on the amount of the recycled ceramic raw materials. The batch composition containing 30% of recycled ceramic raw materials showed the highest sintered density. Sintered density decreased over the temperature of 1200℃ due to the presence of cracks on surface and in bulk.